twit·ty I. \ˈtwid.ē, -itē, -i\adjective (-er/-est) Etymology:twit (II) + -y 1.dialect Britain: ill-tempered, peevish 2.: chirping, twittering < a little twitty bird — Kenneth Roberts > II. adjective (-er/-est) Etymology:twit (IV) + -y of yarn: varying in diameter : full of twits : uneven